


Exhaust Diffuser Baffle ~ Genuine Honda 18311-300-320 (99-5235)
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Exhaust Diffuser Baffle ~ Genuine Honda 18311-300-320 (99-5235)This genuine Honda exhaust diffuser baffle fits inside the original CB750K HM300 muffler to help control exhaust sound and backpressure. It is a smart replacement when the original exhaust diffuser, muffler baffle, exhaust baffle, or diffuser pipe is missing, damaged, or heavily corroded. Use this OEM Honda exhaust diffuser baffle for CB750K restoration work, original exhaust service, and stock muffler repairs where the correct internal baffle
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4.5 ★★★★★
Based on 395 reviews
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Product Reviews
★★★★★ 5
Attractive, Simple, And Well-Made
Size: 7.7" x 7.7" x 1.7", Color: Orange (Metal Glided)
I use this as a "catchall". A place to stash things like my wallet and keys when I enter the door, so that I don't use them (I had been prone to that!). It serves it's purpose well. It's both sturdy and attractive, and a good size for a "catchall". Recommended for those like me who need such things.
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Reviewed in the United States on April 8, 2024
★★★★★ 4
Good quality, orange color
Size: 7.7" x 7.7" x 1.7", Color: Orange (Metal Glided), Size: 7.7" x 7.7" x 1.7", Color: Orange (Metal Glided)
The quality is surprisingly good but the color is much more orange toned in person.
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Reviewed in the United States on April 17, 2024
★★★★★ 5
Holder
Size: 7.7" x 7.7" x 1.7", Color: Black (Metal Silvered)
It’s great for my keys and wallet and other stuff I use it every day
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 30, 2025
★★★★★ 5
Very nice leather catch all
Size: 7.7" x 7.7" x 1.7", Color: Black (Metal Glided)
Lovely tray. High quality.
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Reviewed in the United States on December 10, 2025
★★★★★ 5
Easy to travel
Color: Black
Purchased for travel. Fits my bracelets, watch and my phone. Plenty of room, easy to fold flat to put on my suitcase.
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Reviewed in the United States on May 29, 2026
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